of their lives, rely on therapy, open to fix it? in the czech republic, sex offenders can be let out prematurely, but only if they agree to a drastic measure. >> the preventative detention center is home to 26 sex offenders. this man sexually abused a 12- year-old. because he cannot resist his inclinati towards children, he asked to be castrated. >> a constantly thought about having sex with children. i had bad dreams. i always wanted to do things to kids. >> after having the operation, he suffered from depression, a common side effect of the procedure, and tried to commit suicide. but he no longer thinks about molesting children and hopes to soon be a free man.